Lumentum Holdings Inc. to Join the Nasdaq-100 Index® Beginning May 18, 2026
Rhea-AI Summary
Nasdaq (Nasdaq: NDAQ) announced that Lumentum (Nasdaq: LITE) will join the Nasdaq-100 Index replacing CoStar Group (Nasdaq: CSGP) prior to market open on May 18, 2026.
Index changes take effect before market open on the stated date; additional index notifications are available from Nasdaq.
AI-generated analysis. Not financial advice.
Positive
- Lumentum (Nasdaq: LITE) will join the Nasdaq-100 Index effective May 18, 2026
Negative
- CoStar Group (Nasdaq: CSGP) will be removed from the Nasdaq-100 Index effective May 18, 2026
News Market Reaction – NDAQ
On the day this news was published, NDAQ declined 0.48%, reflecting a mild negative market reaction.
Data tracked by StockTitan Argus on the day of publication.
Key Figures
Market Reality Check
Peers on Argus
Peers show mixed moves: MSCI, ICE, MCO, and CME are modestly negative while COIN is strongly positive. With NDAQ roughly flat at -0.1%, the action appears stock-specific rather than a coordinated sector move.
Historical Context
| Date | Event | Sentiment | Move | Catalyst |
|---|---|---|---|---|
| May 05 | Monthly volume data | Neutral | +0.2% | Reported April 2026 trading volumes and posted detailed data sheet. |
| Apr 29 | Employee benefit update | Positive | -0.0% | Announced matching $1,000 Trump Accounts contribution for eligible U.S. employees’ children. |
| Apr 27 | Trading resumption | Neutral | +0.6% | Resumed trading in American Rebel Holdings securities after prior halt. |
| Apr 24 | Short interest report | Neutral | +0.6% | Released mid‑month open short interest statistics across Nasdaq markets. |
| Apr 23 | Dividend increase | Positive | +0.8% | Increased regular quarterly dividend to $0.31 per share with June 2026 payment. |
Recent routine operational and disclosure updates have generally seen small, positive price reactions, with only one mild divergence on a positive employee-benefit headline.
Over the last several weeks, Nasdaq has issued a series of operational and shareholder-related updates. These include routine disclosures like April 2026 volume statistics and short‑interest data, corporate actions such as resuming trading in American Rebel Holdings, and shareholder-friendly moves like raising the quarterly dividend to $0.31 per share payable on June 26, 2026. Price reactions to these items were modest, suggesting investors have treated such announcements as incremental rather than transformational context for the stock.
Market Pulse Summary
This announcement highlights a change in the Nasdaq‑100 Index, with Lumentum set to join the benchmark on May 18, 2026. For Nasdaq, it represents ongoing maintenance of a key index product rather than a direct financial catalyst. Placed alongside recent routine volume updates, short‑interest reports, and dividend decisions, it fits a pattern of incremental disclosures. Investors may watch how index changes influence trading and product demand over time.
Key Terms
Nasdaq-100 Index financial
AI-generated analysis. Not financial advice.
NEW YORK, May 08, 2026 (GLOBE NEWSWIRE) -- Nasdaq (Nasdaq: NDAQ) today announced that Lumentum Holdings Inc. (Nasdaq: LITE) will become a component of the Nasdaq-100 Index® replacing CoStar Group, Inc. (Nasdaq: CSGP) prior to market open on Monday, May 18, 2026.
For additional information, including notifications on changes to any Nasdaq Indexes, please go to https://indexes.nasdaq.com/
About Nasdaq Global Indexes
Nasdaq Global Indexes is one of the world's leading index providers, offering a comprehensive suite of rules-based benchmarks and indexes. The Nasdaq-100 Index® — which measures the performance of 100 of the largest Nasdaq-listed non-financial companies — is tracked by more than 200 investment products with over
About Nasdaq
Nasdaq (Nasdaq: NDAQ) is a global technology company serving the capital markets and other industries. Our diverse offering of data, analytics, software, and services enables clients to optimize and execute their business vision with confidence. To learn more about the company, technology solutions, and career opportunities, visit us on LinkedIn, on X @Nasdaq, or at www.nasdaq.com.
The information contained above is provided for informational and educational purposes only, and nothing contained herein should be construed as investment advice, either on behalf of a particular financial product or an overall investment strategy. Neither Nasdaq, Inc. nor any of its affiliates makes any recommendation to buy or sell any financial product or any representation about the financial condition of any company or fund. Statements regarding Nasdaq’s proprietary indexes are not guarantees of future performance. Actual results may differ materially from those expressed or implied. Past performance is not indicative of future results. Investors should undertake their own due diligence and carefully evaluate companies before investing. ADVICE FROM A SECURITIES PROFESSIONAL IS STRONGLY ADVISED.
Media Contact:
Maximilian Leitenberger
Maximilian.leitenberger@nasdaq.com
Issuer & Investor Contact:
Index Client Services, Nasdaq
Indexservices@nasdaq.com
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